What's the 3D Lingo for turning off a light? I know there is
'deleteLight' but I don't want to remove it completely. I
want the user
to be able to darken a room by turning off lights (liek
clicking on a
lamp).

On the topic of lights, how does the color property work?
Would a black
color light be dark or off?

I just found - removeFromWorld()
This seems to be a way of hiding a 3D object. Am I
undertsanding this
right - can I use it to temporarily remove a light and then
bring it
back with addToWorld()? And I can use isInWorld() to test if
it is
there?